ReadLens vs Memmo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ReadLens
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Ever read something and got stuck on a word or phrase? ReadLens fixes that in seconds. Point your camera at any text — a book, document, sign, article, or screenshot — highlight the part you don't understand, and ReadLens instantly delivers: Dictionary Definition — Clear, accurate meaning of any word or phrase Contextual Explanation — Understands the meaning within the surrounding text, not just in isolation Example Sentences — See how the word is used naturally in real contexts Your Language — Get explanations in your native language Perfect For: • Students reading textbooks, research papers, or literature • Professionals dealing with legal, medical, or technical documents • Language learners improving vocabulary in context • Curious readers who want to deeply understand what they read How It Works: Open ReadLens and point your camera at any text Highlight the word or phrase you want to understand Get an instant AI-powered breakdown — definition, context, and examples It's that simple. No copy-pasting, no switching apps, no wasted time. Free & Premium: ReadLens is free to start — get a set number of analyses every day at no cost. Upgrade to ReadLens Pro for unlimited scans, priority AI responses, and access to all supported languages. Why ReadLens? Most dictionary apps give you a generic definition with no context. ReadLens reads the whole image and explains what a word means in that specific situation — just like a smart friend looking over your shoulder. Download ReadLens today and never feel lost while reading again. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Memmo
Transform your study materials into interactive quizzes, flashcards, summaries, and podcasts. This AI-powered tool helps you master course content by generating study aids from PDFs, notes, YouTube links, or recorded lectures. Organize your learning by course and track your progress with intelligent insights.
- AI-generated quizzes
- Spaced repetition flashcards
- Customizable summaries
- Lecture-to-podcast conversion
- AI tutor for course material
- Course-specific organization
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Memmo turns your course material into the study tools you actually use. Upload a lecture PDF, record a lecture, paste your notes or add a YouTube link — and Memmo builds quizzes, flashcards, summaries and podcasts from it. Everything is generated from your own material, so you study what your course actually covers. WHAT YOU CAN DO • Quizzes — multiple choice and true/false questions generated from your sources • Flashcards — spaced repetition powered by FSRS, the same algorithm family Anki uses • Summaries — choose the length and reading level you need • Podcasts — turn a reading assignment into audio for the commute • Record lectures — get a transcript and structured notes automatically • Ask Ted — chat with an AI tutor that only answers from your own material COURSE ROOMS Group everything for one course in one place. Memmo tracks which topics you have mastered and which ones still need work, so you always know what to study next. TEXTBOOKS Buy and read course literature directly in the app, with highlighting and notes. Memmo supports Swedish, English and nine more languages for generated material. Free to start. Memmo Pro unlocks unlimited generation. Privacy policy: https://www.memmo.org/en/privacy Terms: https://www.memmo.org/en/terms
Screenshots
Verdict
The clearest difference is in-app purchases: Memmo at none against ReadLens's 3. Memmo also leads on update cadence (every 3 days vs every 6 months). On price, ads, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. ReadLens sells 3 in-app purchases, starting at $1.99 per month. Memmo asks for nothing beyond the download.
ReadLens ships an update every 6 months, Memmo every 3 days. The most recent releases landed on October 18, 2026 and October 14, 2026 respectively.
| Parameter | ReadLens | Memmo |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 6 months | Every 3 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | — | Freemium |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 82 MB | 82 MB |
| Age rating | 4+ | 4+ |
| Developer | JIEUN SONG | Memmo Learning AB |
In-app purchases
ReadLens
- Monthly Subscription$1.991 Month
- Quarterly Subscription$5.993 Months
- Annual Subscription$19.991 Year
Memmo
No in-app purchases









